知识问答
最佳答案：The environmnet of Beijing has been greatly improved,with the freshing air and b
最佳答案：There is only one life,There is only one earth.The earth is the great mother,We
最佳答案：When will the sky turn blue again?When the river was clean again?When will this
最佳答案：I guess the environment must be really nice there.The air will be clean,the sky
最佳答案：My the sky is how clearTransparentAll is all a past airLead long the my hand is
最佳答案：although you and me are in different cities,we are breathing the same air,watchi
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